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NVD / CVE Program· CNA Linux

CVE-2026-90165: smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 3f8651f6bb52159c9e23993c77a2b51b9505ad64, 6.6.157, a2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5ed.

Low priority for now. Upgrade to Linux Linux 3f8651f6bb52159c9e23993c77a2b51b9505ad64, 6.6.157, a2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5ed or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: smb/server: fix invalid pointer dereference in ksmbd_stop_durable_scavenger() See the procedure below: ksmbd_launch_ksmbd_durable_scavenger durable_scavenger_running = true server_conf.dh_task = kthread_run() // fail, dh_task is an ERR_PTR() server_ctrl_handle_reset ksmbd_stop_durable_scavenger kthread_stop(server_conf.dh_task) // invalid pointer

—No exploit Fix available
Published
Sep 17, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 6.11affected
    • 7f0cb478703cbeaddfe5c9101c5c73cd975d1073 and later · before 3f8651f6bb52159c9e23993c77a2b51b9505ad64affected · git
    • d484d621d40f4a8b8959008802d79bef3609641b and later · before af9cb997d13a17029a0d3863e33f4c837e27a8aeaffected · git
    • d484d621d40f4a8b8959008802d79bef3609641b and later · before b2d78c199dfd983638662ace0612d4fade3dbea1affected · git
    • d484d621d40f4a8b8959008802d79bef3609641b and later · before a2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5edaffected · git
    • d484d621d40f4a8b8959008802d79bef3609641b and later · before bef46b604732d83f8da29f782868de4d25bf972caffected · git
    • 6.6.142 and later · before 6.6.157affected · semver
    • before 6.11not affected · semver
    • 6.6.157 and later · up to and including 6.6.*not affected · semver
    • 6.12.110 and later · up to and including 6.12.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1
openSUSE:Tumbleweedkernel-sourcebefore 7.2.8-1.17.2.8-1.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-90163Sep 17, 2026 · smb/server: call ksmbd_proc_cleanup() on module init failure
    0Monitor
  • ← EarlierCVE-2026-90164Sep 17, 2026 · smb/server: abort initialization when proc setup fails
    0Monitor
  • Later →CVE-2026-90166Sep 17, 2026 · smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3f8651f6bb52159c9e23993c77a2b51b9505ad64Vendor (CNA)
Linux Linux6.6.157Vendor (CNA)
Linux Linuxa2eb72b4d53bb9d8d6c00f3f794eaccb4b1ce5edVendor (CNA)
Linux Linuxaf9cb997d13a17029a0d3863e33f4c837e27a8aeVendor (CNA)
Linux Linuxb2d78c199dfd983638662ace0612d4fade3dbea1Vendor (CNA)
Linux Linuxbef46b604732d83f8da29f782868de4d25bf972cVendor (CNA)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)
opensuse:kernel-source7.2.8-1.1 · openSUSE:TumbleweedPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records